parasympathetic response

Sit Up Straight, a Language of Energy, and Two Hours instead of One?

 
 

🎧 Listen Instead of Reading 🎧

If you enjoy listening, you can subscribe to the audio version on Spotify, Apple Podcasts, and Audible so you don’t even have to look at the email 😊

 
 
 

4 Thoughts


1. Mindful Low-and-Slow Breathing is “Almost Always Helpful”

“Mindful low-and-slow breathing (Chapter 2) activates the parasympathetic (relaxation) nervous system and is therefore almost always helpful in reducing physiological arousal, including bringing down skin conductance. Reducing skin conductance with low-and-slow breathing is particularly helpful for a quick recovery break, between meetings, or as a break from challenging activities of the day.”

- Inna Khazan, PhD, Biofeedback and Mindfulness in Everyday Life

Mindful low-and-slow breathing is “almost always helpful in reducing physiological arousal.” <— sounds good to me.

Use it anytime, anywhere for a quick reset and recovery.

2. Sit Up Straight: Take a Full, Deep Breath

“Our thoracic curve affects lung function. When the thoracic curve become more pronounced (think hunchback), the lungs’ ability to expand decreases. Excessive thoracic curvature weakens respiratory muscles and restricts your ability to take a full, deep breath.”

- Pete Egoscue, Pain Free

We probably don’t need another reminder to sit up straight. We know good posture is essential for just about everything (especially breathing; and vice-versa, as good breathing can lead to better posture).

But, for some reason, it really stuck out here and has inspired me to make my posture a top priority. Maybe this passage will spark something for you too 🙏

3. Do This when Life Gets Complicated: Two Hours instead of One

“The non-negotiable part is key. When life gets complicated, these four practices are typically what we remove from our schedule, but the research shows this is the last choice we should make. When life gets complicated, lean into these practices, as they’re how you get the creativity needed to untangle the complicated.”

- Steven Kotler, The Art of Impossible

Kotler is discussing four key practices for “sustained peak performance” (which he says are gratitude, mindfulness, exercise, and sleep).

But the idea applies to anything we do for better health (like breathing).

When life gets absurdly busy, lean into these practices. As Gandhi said, “I have so much to accomplish today that I must meditate for two hours instead of one.”

4. Sleep Better with Breathing

Car accidents and heart attacks will spike today due to the time change (which is why I haven’t participated in two years—be the change you want to see style.)

However, most of us can’t just ignore it due to life and work obligations. The next best thing is protecting ourselves. Here’s how breathing can help:

 
 
 
 

1 QUOTE

“Within the rhythms and structure of your breath is coded a language of energy that your nervous system, glands, and mind understand.”

- Gurucharan Singh Khalsa, PhD, and Yogi Bhajan, PhD

 
 
 
 

1 ANSWER

Category: Sleep

Answer: Before the invention of electric light, people used to sleep about this many hours.

…

(Cue the Jeopardy! music.)

…

Question: What is ten hours?

In good breath,

Nick Heath, T1D, PhD
“Breathing is the compound interest of health & wellness.”

P.S. My favorite childhood memory

P.P.S. Thanks to Laura from the MAPS Institute for sharing that funny post.

 
 
 

* An asterisk by a quote indicates that I listened to this book on Audible. Therefore, the quotation might not be correct, but is my best attempt at reproducing the punctuation based on the narrator’s pace, tone, and pauses.

Sign Up For The Breathing 411

Each Monday, I curate and synthesize information from scientific journals, books, articles, and podcasts to share 4 thoughts, 1 quote, and 1 answer (like "Jeopardy!") related to breathing. It’s a fun way to learn something new each week.

 
 

Ujjayi isn’t Ocean, Well-Being, and Why You Should Teach “Brooklyn” Yoga

 
 

Listen Instead of Reading

 

This week, you’re going to learn:

  • That Ujjayi and Ocean breathing are different,

  • How to breathe for inflammation, and

  • A story I listened and laughed at more times than I’m proud to admit…

I hope you enjoy it!

 
 
 
 

4 Thoughts


1. Ujjayi vs. Ocean Breathing (turns out they’re different)

“Ujjayi pranayama, which is performed by lightly tightening the glottis and breathing with a whispering sound and then exhaling out of either the left or right nostril, stimulates the vagus through massaging the larynx and downregulating the sympathetic nervous system. … Ocean breath is sometimes used synonymously with ujjayi, but the two are separate practices.”

- Eddie Stern, One Simple Thing

I thought Ujjayi and Ocean breathing were the same thing. So, I found this passage fascinating (especially that Ujjayi uses an exhale through one nostril). I messaged Eddie about it, and he kindly responded with even more value.

He added that, for Ocean breathing, “the sound is made not so much by the tightening of the glottis, but by creating a continuum of pressure from the high nasal cavity, through the throat, into the thorax.”

That means there are two key differences between Ujjayi and Ocean breathing:

  • Ujjayi: sound comes from the glottis, and the exhale is through only one nostril.

  • Ocean: sound comes from the nose to thorax, and the exhale is through both nostrils.

My favorite part about breathing is continuously learning that I have so much more to learn : ) Thanks, Eddie!

***

Related: Hatha Yoga Pradipika (#51-53)

Related: My Conversation with Eddie on All Things Breathing

Related Quote: “The surest way to prevent yourself from learning a topic is to believe you already know it.” - James Clear

2. Slow Breathing for Oxidative Stress and Inflammation

Diabetes and its associated blood sugar fluctuations lead to chronic oxidative stress and inflammation. What can slow deep breathing do?

  • JACM (2011): “Diaphragmatic breathing, likely through the activation of the parasympathetic nervous system…reduces reactive oxygen species production.”

  • Nature (2017): “…our results lead to the hypothesis that slow breathing may exert some antioxidant effect, possibly via parasympathetic stimulation.”

  • PLOS One (2013): “RR [relaxation response] practice…reduced expression of genes linked to inflammatory response and stress-related pathways.”

Taken together, these results suggest that slow breathing could be a simple and effective way to reduce oxidative stress and inflammation in diabetes. 

But you don’t need diabetes to benefit. These two complications are present in many acute and chronic conditions, so the above results will help everyone.

3. “Why Your Breath is Connected to Your Well-Being”

“As deep breaths slow your heart rate, for example, your vagus nerve recognizes the cues of safety and sends that information to parts of the body so they can turn off their defenses, such as those that arise from a sense of anxiety or threat.”

- Why Your Breath is Connected to Your Well-Being

This is an awesome little article on breathing and well-being, focusing mainly on the vagus nerve.

You will learn how vagal tone is connected with social situations, how compassion can increase respiratory sinus arrhythmia (a marker of vagal activity), and 4 simple ways to calm your whole body.

I hope you enjoy it as much as I did.

4. Why You Should Start Teaching “Brooklyn” Yoga

“One new meditator kept coming to interviews with a chronic lament: ‘The breath is so boring!’

Finally, I asked him if he'd ever heard of Brooklyn yoga? He said no. I told him to close his mouth tight and close off both nostrils with his fingers. We sat that way for some time until finally he let go of his nose and gasped for air.

‘Was that breath boring?’, I said.”

- Larry Rosenberg, Breath by Breath

I must have listened to this story about 10 times in a row and laughed more with each one. It brilliantly captures the importance of breathing—no science or technical jargon needed.

So if anyone tells you breathing is boring, doesn’t work, or is pseudo-science, teach them a little “Brooklyn” yoga—you might just change their mind : )

***

P.S. When I ran in and told my wife the story (yes, I was excited, lol), she didn’t get the “Brooklyn” part. Neither do I, but I think that’s the point : )

Related: Is Breathing Woo-Woo? (Thought #4)

 
 
 
 

1 Quote

“If one wants longevity, one should let the spirit and the breath pour into each other.”

–Tao Tsang

Translation from The Primordial Breath

 
 
 
 

1 Answer

Category: Vagus Nerve Function

Answer: Activation of the vagus nerve releases this chemical, which stimulates muscle contractions in the parasympathetic nervous system and slows the heart rate.

…

(Cue the Jeopardy! music.)

…

Question: What is acetylcholine?

In good breath,

Nick Heath, T1D, PhD
“Breathing is the compound interest of health & wellness.”

P.S. No I don’t “meditate”

 
 
 

Sign Up For The Breathing 411

Each Monday, I curate and synthesize information from scientific journals, books, articles, and podcasts to share 4 thoughts, 1 quote, and 1 answer (like "Jeopardy!") related to breathing. It’s a fun way to learn something new each week.

 
 

How I Trained for Altitude and Why We All Benefit from Breath Training

 
 

Listen Instead of Reading

 

Autonomic Neuroscience says slow breathing is for diabetes & hypertension.

Harvard Medical School says yogic breathing is for stress.

And Tibetan Yoga says breath training is for everyone.

Let’s see how…

 
 
 
 

4 Thoughts


1. How I Trained for High Altitude (it’s not what you might think)

I thought, “I’m The Breathing Diabetic. I better be able to handle some altitude.”

But I didn’t train how you might think. Of course, I initially started with more breath holds. But I realized that the issue at altitude is lower air pressure.

- How I Trained for High Altitude Blog Post

This one was slightly too long to fit in as a “Thought,” so I made it a really short blog post.

Give it a read to learn my somewhat odd training method for my recent hike up to 13,200 feet…and to see if it actually worked (pictures included).

Please respond to this email if you have any thoughts on my reasoning…it was my first time at altitude, so I’d appreciate any feedback or thoughts you have.

***

Related: How To Breathe To Live Longer

2. Slow Breathing for Diabetes and High Blood Pressure

“Even in already well controlled diabetic patients, guided breathing had beneficial influences on cardiovascular autonomic control and a measurable impact on BP control.  It enriches available options for non-pharmacological blood pressure…reduction.”

- Effects Of Guided Breathing On Blood Pressure And Heart Rate Variability In Hypertensive Diabetic Patients

According to Johns Hopkins, approximately two-thirds of adult diabetics have high blood pressure or take medication for it. And people with diabetes and hypertension are 4x more likely to develop heart disease.

Fortunately, this study found that just 12 minutes a day of slow breathing (with no changes to medication) led to significantly lower blood pressure, increased heart rate variability, and a reduced spontaneous breathing rate (indicating reduced sympathetic arousal).

All of which led to this remarkable final statement: “If consistently used, guided breathing enhances restoration of physiological autonomic balance in patients with diabetes and hypertension.” Amen 🙏

Here’s to controlling our breath to control of our blood pressure, today.

3. Harvard Medical School: “Yogic Breathing Improved University Students' Response to Stress”

“When we anticipate a stressful situation, our breathing and heart rates naturally go up…but the yogic breathing group seemed to show protection against that type of stress. Their heart rate increased only slightly when they knew a stressful situation was coming.”

- Yogic breathing improved university students' response to stress

Enjoy this excellent and quick write-up showing that yogic SKY breathing can significantly reduce the stress response. It’s from the Beth Israel Deaconess Medical Center, a world-class teaching hospital of Harvard Medical School.

The next thought builds off of this idea of “protection against stress”…

4. What Turbulence Can Teach Us About Breathing

When you’re flying and hit turbulence, you’re told to put on your seatbelt.

It’s reactive.

It’s similar to when turbulence hits in our lives. We react. We start eating healthy or meditating or exercising more.

But a regular breathing practice is proactive.

It helps you avoid turbulence altogether.

Or, if you can’t avoid the turbulence, it’s like your seatbelt. You’re already fastened in. You don’t need to rush back to your seat. You’re ready.

 
 
 
 

1 Quote

“Because the breath is such an excellent and abundant support for life and vitality for every being on the planet, everyone can benefit from training in the breath.”

– The Tibetan Yoga of Breath

 
 
 
 

1 Answer

Category: Hypoxia and Red Blood Cells

Answer: During hypoxia, this organ releases additional red blood cells to increase your oxygen carrying capacity.

…

(Cue the Jeopardy! music.)

…

Question: What is the spleen?

In good breath,

Nick Heath, T1D, PhD
“Breathing is the compound interest of health & wellness.”

P.S. “sorry, it’s my first day!”

 
 
 

Sign Up For The Breathing 411

Each Monday, I curate and synthesize information from scientific journals, books, articles, and podcasts to share 4 thoughts, 1 quote, and 1 answer (like "Jeopardy!") related to breathing. It’s a fun way to learn something new each week.

 
 

How Modern Science Supports Ancient Yoga, plus Comfort in Breathwalking

 
 

Listen Instead of Reading

 

The way you breathe might affect your insulin sensitivity. And the way you walk definitely affects your ability to withstand discomfort.

Let’s find out how…

 
 
 
 

4 Thoughts


1. Longer Exhalations are Naturally Relaxing

“It's helpful to extend your exhalations because the ‘rest and digest’ parasympathetic nervous system handles exhaling while also slowing your heart rate. So, longer exhalations are naturally relaxing.”

- Rick Hanson, Ph.D., Neurodharma

Just a friendly reminder that extending the exhalation is one of the fastest ways to naturally relax. That is all : )

***

Related: Longer Exhalations Are an Easy Way to Hack Your Vagus Nerve

Related: BBC: Why slowing your breathing helps you relax

2. How Breathing Might Help with Insulin Sensitivity

“These observations demonstrate that hypoxia rapidly regulated the inhibition of the insulin signaling pathway […] During reoxygenation, the ability of insulin to stimulate phosphorylation of insulin receptor and signaling proteins was restored after 45 min.”

– Hypoxia Decreases Insulin Signaling Pathways in Adipocytes

Insulin resistance is a critical factor in diabetes and overall metabolic health. In this paper, we learn that low tissue oxygen (hypoxia) can trigger insulin resistance. Encouragingly, however, reoxygenation restored it.

This is one reason why optimal breathing is so essential for metabolic health, especially for people with diabetes. By practicing slow nasal breathing, we increase our blood and tissue oxygenation. This could potentially maintain, or even restore, insulin sensitivity.

Of course, there is no research showing that slow nasal breathing does this—no one is going to fund that study : ) But, given what we know about slow breathing, tissue oxygenation, and blood flow, it seems reasonable to hypothesize that it would help. I know have certainly noticed a difference.

***

Related: The Lesser-Known Benefits of Nasal Breathing, Designed for Diabetes

3. “Role of respiration in mind-body practices: concepts from contemporary science and traditional yoga texts”

“Traditional yoga texts also suggest a solution for the imbalance in prana, through slow, deep breathing. … The beneficial effects of deep breathing are supported by contemporary science.”

- Telles et al. (2014), Frontiers in Psychiatry

I’ve shared a quote from this paper before, but if you haven’t read the full thing, it’s well worth it. It describes how modern science supports ancient yogic breathing, for example, how “Conventional physiology has found benefits of deep breathing supporting the importance given to regulating the breath in yoga.”

Another interesting idea they mention is that breathing “acts as both a top-down and bottom-up mind-body practice.” It makes perfect sense, but I hadn’t thought about it that way.

Ancient Yogic Wisdom + Modern Science = A Fantastic Read

Enjoy!

4. Finding Comfort in Breathwalking

“To take my mind off the discomfort, I settle into a respiratory rhythm. I take one step as I breathe in, then two steps as I breathe out. One step breathing in, two steps breathing out. Over and over, focusing only on the breath.”

- Michael Easter, The Comfort Crisis

Easter spent more than a month in a remote region of Alaska. And this book that came out of it is incredible—a perfect blend of science and storytelling.

Of course, this part stood out to me : )

Easter is making a ridiculous walk back to camp with a ton of weight. He naturally settles into his breath, and this gives him comfort and endurance.

As he puts it, “There's science behind this. Brazilian researchers found that people who are able to detach from their emotions during exercise, for example, not thinking about or putting a negative valence on their burning legs and lungs, almost always perform better.”

So aside from the mechanics and oxygenation, here’s another way in which breathwalking can be beneficial. It helps you detach from your emotions. As Easter tells us, you’ll “almost always perform better.” Sounds good to me.

***

Related: Breathwalking with Gandhi

 
 
 
 

1 Quote

“He let me see that, because the breath is so unassuming, I had been undervaluing it. I was looking for a complicated path to enlightenment, when this simple one was right before me.”

- Larry Rosenberg, Breath by Breath

 
 
 
 

1 Answer

Category: Hypoxia

Answer: A blood oxygen saturation below approximately this value is considered hypoxic.

…

(Cue the Jeopardy! music.)

…

Question: What is 90%?

P.S. Different places give slightly different numbers…sometimes it’s 94%, sometimes 92%.

In good breath,

Nick Heath, T1D, PhD
“Breathing is the compound interest of health & wellness.”

P.S. What if?

 
 
 

Sign Up For The Breathing 411

Each Monday, I curate and synthesize information from scientific journals, books, articles, and podcasts to share 4 thoughts, 1 quote, and 1 answer (like "Jeopardy!") related to breathing. It’s a fun way to learn something new each week.

 
 

Relaxation Breathing Reduces Blood Sugar Spikes

 
Holiday_Explore_by_Foot.png
 
 

This week, I am sharing one of those amazing papers that I read and underline the whole thing. Despite having a small sample size, it hints at the incredible benefits of breathing for optimal blood sugars.

Relaxation Breathing Improves Human Glycemic Response

(Click Here to Read the Full Summary)

The study participants were randomized into a control group (n=13) and a relaxation breathing group (n=13). The relaxation breathing (RB) protocol used a constant inhale with a progressively longer exhale:

  • Inhale 2 sec, exhale 1 sec.

  • Inhale 2 sec, exhale 2 sec.

  • Inhale 2 sec, exhale 3 sec.

  • …

  • Inhale 2 sec, exhale 10 sec.

The participants performed this exercise once every 10 minutes for 30 minutes prior to an oral glucose tolerance test. Then, they did it every 10 minutes for 90 minutes after the test. Overall, they did the RB technique 3 times before and 9 times after the test. The control group simply took the glucose tolerance test.

The results showed that the RB group had a significantly lower blood sugar (~37 mg/dL lower) thirty minutes after the glucose tolerance test.  After an hour, the two groups were approximately the same. Thus, relaxation breathing reduced the blood sugar spike associated with the glucose tolerance test.

Although the exact mechanisms are not clear, it seems likely that activation of the parasympathetic nervous system improved the insulin response of the RB group, and might have also improved insulin sensitivity.

This study provides another scientifically-validated breathing technique we can use to improve our blood sugars. After reading this paper, I started using it quite often.  I’ve found it’s nice to do while lying in bed before sleep.  I also find it helpful at the beginning of a breathing/meditation session just to calm everything down. 

And, with how simple it is, you do not need a watch or app. You can simply count in your head. It only takes ~75 seconds to complete one cycle and it will leave you feeling calm and relaxed (and potentially lower your blood sugar).

Give it a try before your next meditation or breathing session as a way to prepare you for relaxation.

In good breath,
Nick

P.S. I am finalizing this post on Friday, Feb. 28, and do not plan to look at it again before Monday (I am assuming my body/mind will not be in any capacity to do so). Hopefully I made through the 100 miles with no major issues. If you still want to donate, it’s not too late. HHPF is always accepting donations to further their mission. Thank you for your support!